import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Main
{
    public static void main(String [] args)
    {
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext(new String[]{"beans.xml"});
        IAuthenticatorsProvider provider = (IAuthenticatorsProvider)applicationContext.getBean("authenticatorsProvider");
        System.out.println(provider.getAuthenticator("FacebookAuthenticator").getClass());
    }
}
